Bobbin support for weft-replenishing mechanism



Nov. 30 1926. 1,608,647

A. J. cHEvRETTE BOBBIN SUPPORT FOR WEFT REPLENISHING MECHANISM FiledAugust 14, 1925 fidi Patented Nov. 30, 1926.

UNITED STATES PATENT OFFICE.

AUGUSTIN fr. CHEVRETTE, `or WORCESTER, MASSACHUSETTS, `ASSIGNOR ToCROMP- TON & KNOWLES LOOM WORKS, or WORCESTER, MASSACHUSETTS, ACORPORATION OF MASSACHUSETTS.

BOBBIN SUPPORT FR WEET-REPLENISHING MECHANISM.

Application filed August 14, 1925. Serial No. 50,329.

This invention relates to improvements in bobbin supports for weftreplenishing mechanisms of the multi-color' type and an object of theinvention is to provide a support with a giveway the end of which mayyield in any angular direction wit-hrespect to the supporting structure.

In replenishing mechanisms of the type referred to bobbins are releasedfrom' one of vseveral vertical.compartments` and guided along supportsto transfer position just prior to the descent of the transferrer arm.It sometimes happens that the bobbin moves toward transferposition'irregularly and is struck by the arm before being `properlyplaced.` When this occurs itis desirable that the Support yield toprevent breakage andit is accordingly a further object of my invent-ionto provide a support so constructed that it will yield downwardly underthe pressure of an improperly placed bobbin.

It also occasionally happens that a bobbin will be improperlytransferred into a shut` tle and as it is carried rearwardly by the laywill project to engage the fgiveway, and to prevent breakage under suchconditions the support is so made as to yield upwardly or laterally whenengaged by a misplaced bobbin.

With these and other objects in view which will appear as thedescription proeecds, my invention resides in the combination andarrangement of parts hereinafter described and set forth in the claims.

In the accompanying drawings wherein I have shown a convenientembodiment of my invention,

Fig. 1 is a vertical section through a multi-color weft replenishingmechanism looking toward the center of the loom and having my inventionapplied thereto.

Fig. 2 is an enlarged vertical section through the improved giveway.

Fig. 3 is a rear end elevation of the support and its holder looking inthe direction of arrow 3, Fig 1, and

Fig. 4 is a detail elevation of the yielding nose.

Referring more particularly to the drawings it will be seen that I haveprovided a weft replenishing frame 10 having a plurality of guideways 11in which bobbins normally await transfer. The bobbins are delivered oneat a time by devices not shown to move to transfer position under thetrans ferner arm 12. A guideway 13 is pivotally mounted at the bottom ofa linlr lll shown in dotted lines in Fig. 1 and loosely mounted on alined tie rod 15. The guideway 13 has a rearwardly and upwardlyextending arm 16 which has pivotal connection as at 17 with a link 18pivoted at19 to some fined part of the replenishing mechanism. A SpringL0 serves to hold the guideway 13 in the position shown in Fig. 1. Thematter thus `far described isv of common construe tion and for furtherdescription reference may be had to Patent No. 1,030,748 and Patent No.1,366,950.

My improvements relate more particulan ly to the outer Support for therear side of the bobbin and in carrying out my improvements I provide abracket 30 adjustably held to the tie rod by set screw 31. Said brackethas a Split hub 32 across which extend screws 33 serving to tighten theSame. `The support proper, as shown in the drawings, comprises two solidmembers yieldingly held together by a "flexible intermediate member. Therear holding member 34 extends through the split hub and is adjustablelongitudinally therein and as shown in Fig. 2 has a reduced threadedforward end 35.

Spaced from the holding member 34: is a bobbin supporting nose 36 havinga rearwardly extending reduced threaded end 37 similar to the reducedend 35. A tightly wound coil spring 38 is screwed unto the ends and 37,the pitch 'of the threads of said ends being the same as that of thecoils of the spring so that the latter fits tightly on said threadedends. Said spring 38 is stifl:l enough to hold the nose 36 normally inthe position shown in Fig. 1 but at the time of bobbin transfer saidnose will be moved downwardly to the position shown in dotted lines inFig. 2. Should the bobbin be improperly transferred so as to projectabove the shuttle as the same moves baclrwardly with the latter the nosewill .be move upwardly to the position shown atin Fig. 2. In making thesupport I find it convenient to turn the nose 36 integral with theholding member 34 and cut the threads on the same at one operation afterwhich the two parts may be separated. This ope-ration insures that theaxes of the two parts of the support will be coincident and that thethreads Will be the same.

Fromthe foregoing it will be seen that YI have provided a very simplebobbinpsupport I the yielding portion of Which isrinovable in allangular directions with respect to the .supporting .structure and thatthe support,

1s symmetrical about the longitudinal axis thereofV so as to be operablein any angular position With respect to the bracket 30.

Having thus. described: my inventioniit AWill be apparent thatl changesand modifica tions may be lmade therein by those skilled in the artWithout departing from the spirit and scope of the invention and I do`not Wish to belimite'd to thedetails herein disclosed, but what I claimis n Y flu: In a weftreplen-ishing mechanism, a bobbin support mountedonp'the mechanism comprisimgV a pair of spaced members each of which hasVthreadedportions and acoil spring located between said members andsupport for the', other of said members, said other member beingsupported entirely by the spring;

A 3. In a bobbin support for loom weft replenishing mechanismcomprisingl a pair of spaced `members' each provided With a threadedportion anda coil spring having the ends thereof received by the threadsor' the thr'eiuledportions, one ofsaid members being supportedentirelyfby said spring. y 4. A bobbin support Vfor loom` weft re-,plenishing mechanism comprising a pair of spaced members each'haviiig areduced portion providedivith threads, and aspring the successive coilsof Which are spaced the same asI the threads of the reducedlportions,the ends of said lspring being. received by the portions andv beingthreaded thereon to prevent longitudinal relative movement of themembers and the; spring.

5. In aloom .weft replenishing mechal nism, supporting structure formingpart oi the replenishing mechanisim a bobbin support formed of twospaced members one of Which is held vby the supporting structure, and aresilient device' having yholdingeontact With both members to hold themin spaced relation and serving as the only supl port for'the other ofsaid members.VV

6. A bobbin support for loom vvet replenishing mechanism,rsaid supportcomprising a pair of spaced members `and a resilient device connectingthe members together so that said members are relatively i',fieldable5one of said members beingvsupported entirely by the resilient devicekWhen the other member is secured Vto supporting structure Y f Intestimony whereof I have hereunto at fixedmy signaturem ,Y

AUGUSTIN VJ. GHEVRETTE.

